/*
 * Copyright 2002-2008 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.hasor.jdbc.core.source;
import java.util.HashMap;
import java.util.Map;
import net.hasor.core.Hasor;
import net.hasor.jdbc.SqlParameterSource;
/**
 * Abstract base class for {@link SqlParameterSource} implementations.
 * Provides registration of SQL types per parameter.
 *
 * @author Juergen Hoeller
 * @since 2.0
 */
public abstract class AbstractSqlParameterSource implements SqlParameterSource {
    private final Map<String, Integer> sqlTypes  = new HashMap<String, Integer>();
    private final Map<String, String>  typeNames = new HashMap<String, String>();
    /**
     * Register a SQL type for the given parameter.
     * @param paramName the name of the parameter
     * @param sqlType the SQL type of the parameter
     */
    public void registerSqlType(String paramName, int sqlType) {
        Hasor.assertIsNotNull(paramName, "Parameter name must not be null");
        this.sqlTypes.put(paramName, sqlType);
    }
    /**
     * Register a SQL type for the given parameter.
     * @param paramName the name of the parameter
     * @param typeName the type name of the parameter
     */
    public void registerTypeName(String paramName, String typeName) {
        Hasor.assertIsNotNull(paramName, "Parameter name must not be null");
        this.typeNames.put(paramName, typeName);
    }
    /**
     * Return the SQL type for the given parameter, if registered.
     * @param paramName the name of the parameter
     * @return the SQL type of the parameter,
     * or <code>TYPE_UNKNOWN</code> if not registered
     */
    public int getSqlType(String paramName) {
        Hasor.assertIsNotNull(paramName, "Parameter name must not be null");
        Integer sqlType = this.sqlTypes.get(paramName);
        if (sqlType != null) {
            return sqlType;
        }
        return TYPE_UNKNOWN;
    }
    /**
     * Return the type name for the given parameter, if registered.
     * @param paramName the name of the parameter
     * @return the type name of the parameter,
     * or <code>null</code> if not registered
     */
    public String getTypeName(String paramName) {
        Hasor.assertIsNotNull(paramName, "Parameter name must not be null");
        return this.typeNames.get(paramName);
    }
}